Production of
mesons in near-threshold
and
reactions
A.I. Titov1,2 - B. Kämpfer1 - B.L. Reznik3
1 Forschungszentrum Rossendorf, PF 510119, 01314 Dresden, Germany
2 Bogoliubov Laboratory of Theoretical Physics, JINR, Dubna 141980, Russia
3 Far-Eastern State University, Sukhanova 9, Vladivostok 690090, Russia
Received: 27 January 2000 Communicated by W. Weise
Abstract
We analyze the production of
mesons
in
and NN reactions in the near-threshold region,
using throughout the conventional ``non-strange'' dynamics based on such
processes which are allowed by the non-ideal
mixing.
We show that the occurrence of the direct
interaction
may show up in different unpolarized and polarization
observables in
reactions.
We find a strong non-trivial difference between
observables in the reactions
and
caused
by the different role of the spin singlet and triplet states
in the entrance channel.
A series of predictions
for the experimental study of this effect is presented.
PACS
13.75.-n Hadron-induced low- and intermediate-energy reactions and scattering (energy 10
GeV) -
14.20.-c Baryons (including antiparticles) -
21.45.+v Few-body systems
Copyright Società Italiana di Fisica, Springer-Verlag 2000